Convert JSON to CSV
Convert JSON arrays and objects to CSV in your browser. Nested fields are flattened into clear columns and your data is never uploaded.
Drop your JSON files here
Up to 50MB per file.
Files never leave your browser
How to Convert
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Upload your JSON files
Drag and drop or select JSON files from your device. You can upload multiple files at once.
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Configure Output
Start the conversion. Crest Convert will prepare the CSV file using the appropriate format engine.
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Download CSV files
Once conversion finishes, download your files individually or as a compressed ZIP archive.
Why convert JSON to CSV?
JSON is a structured text format widely used by APIs, applications, and development tools. Converting it to CSV creates a simple tabular data format used by spreadsheets, databases, and data tools, ready for workflows that use the destination format.
CSV opens in Excel, Google Sheets, Apple Numbers, LibreOffice Calc, database tools, and most programming languages.
Frequently Asked Questions
What does converting JSON to CSV do?
It creates a genuine CSV file from your JSON. JSON is a structured text format widely used by APIs, applications, and development tools, while CSV is a simple tabular data format used by spreadsheets, databases, and data tools. The result is ready for workflows that use the destination format.
What is retained in the JSON to CSV conversion?
Records and values from JSON are arranged into spreadsheet rows and columns in CSV, making the result convenient to sort, filter, calculate, and review.
Which apps can open the converted CSV file?
CSV opens in Excel, Google Sheets, Apple Numbers, LibreOffice Calc, database tools, and most programming languages.
Does JSON to CSV run in my browser?
Yes. This JSON to CSV conversion runs locally in your browser for fast, private processing on your device.
Can I batch convert JSON files to CSV?
Yes. Add multiple JSON files, convert them together, and download each CSV result separately or collect the completed batch in a ZIP file.
What is the JSON to CSV file size limit?
JSON files can currently be up to 50MB.